+6To compare database table structures, I try to calculate the CRC of the table schema like this.
However I seem to be unable to set the parameters for the crc calculator to do what I want. In the end I only need that one number of the CRC to compare it with the equally retrieved CRC of the same table in a different database
Best answer by david_r
The schema definition comes as a list attribute, which isn't really supported by the CRCCalculator. You can e.g. use a ListConcatenator to convert the list into a string for the CRCCalculator.
Note 1: If the schemas are identical but the attribute order differs, the CRC will also differ. You can use a ListSorter before the ListConcatenator to prevent this.
Note 2: If you haven't already, set the FeatureReader to read only the schema feature and not the data features, it will make a big difference in performance:
The schema definition comes as a list attribute, which isn't really supported by the CRCCalculator. You can e.g. use a ListConcatenator to convert the list into a string for the CRCCalculator.
Note 1: If the schemas are identical but the attribute order differs, the CRC will also differ. You can use a ListSorter before the ListConcatenator to prevent this.
Note 2: If you haven't already, set the FeatureReader to read only the schema feature and not the data features, it will make a big difference in performance:
